diff --git a/README.md b/README.md
index 2ade6fe..8c4c7c5 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 pypto2gpano
 ===========
 
-This is a simple python script, inspired by [a perl one](https://panotools.svn.sourceforge.net/svnroot/panotools/trunk/Panotools-Script/bin/pto2gpano)
+This is a simple python script, inspired by [a perl one](https://panotools.svn.sourceforge.net/svnroot/panotools/trunk/Panotools-Script/bin/pto2gpano), to add exif information used by google photosphere on a panorama created with hugin.
+